How can I list used database/table size resp user space ? Compression after
How can I list used + maximum tablespace/database/table size of an Oracle database ?
How can I list the space used currently by a user resp. his tables+indizes ?
By the way: If I delete a user or table from an Oracle database installation: are then only the entires deleted
or is the space released as well ?
In otherwords: After I deleted a user resp. table is it recommended to do something like a "compress" similarly to Outlook
or other eMail clients to shrink really the occupied space on hard disc ?
I hope this helps you
select df.tablespace_name "Tablespace",
totalusedspace "Used MB",
(df.totalspace - tu.totalusedspace) "Free MB",
df.totalspace "Total MB",
round(100 * ( (df.totalspace - tu.totalusedspace)/ df.totalspace))
"Pct. Free"
from
(select tablespace_name,
round(sum(bytes) / 1048576) TotalSpace
from dba_data_files
group by tablespace_name) df,
(select round(sum(bytes)/(1024*1024)) totalusedspace, tablespace_name
from dba_segments
group by tablespace_name) tu
where df.tablespace_name = tu.tablespace_name;
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